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view tests/test-obsolete-changeset-exchange.t @ 40176:41263df08109
wireprotov2: change how revisions are specified to changesetdata
Right now, we have a handful of arguments for specifying the revisions
whose data should be returned. Defining how all these arguments
interact when various combinations are present is difficult.
This commit establishes a new, generic mechanism for specifying
revisions. Instead of a hodgepodge of arguments defining things, we
have a list of dicts that specify revision selectors. The final set
of revisions is a union of all these selectors.
We implement support for specifying revisions based on:
* An explicit list of changeset revisions
* An explicit list of changeset revisions plus ancestry depth
* A DAG range between changeset roots and heads
If you squint hard enough, this problem has already been solved by
revsets. But I'm reluctant to expose revsets to the wire protocol
because that would require servers to implement a revset parser.
Plus there are security and performance implications: the set
of revision selectors needs to be narrowly and specifically tailored
for what is appropriate to be executing on a server. Perhaps there
would be a way for us to express the "parse tree" of a revset
query, for example. I'm not sure. We can explore this space another
time. For now, the new mechanism should bring sufficient flexibility
while remaining relatively simple.
The selector "types" are prefixed with "changeset" because I plan
to add manifest and file-flavored selectors as well. This will enable
us to e.g. select file revisions based on a range of changeset
revisions.
Differential Revision: https://phab.mercurial-scm.org/D4979
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Mon, 08 Oct 2018 18:17:12 -0700 |
parents | f9232b0310ef |
children | 34a46d48d24e |
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Test changesets filtering during exchanges (some tests are still in test-obsolete.t) $ cat >> $HGRCPATH << EOF > [experimental] > evolution.createmarkers=True > EOF Push does not corrupt remote ---------------------------- Create a DAG where a changeset reuses a revision from a file first used in an extinct changeset. $ hg init local $ cd local $ echo 'base' > base $ hg commit -Am base adding base $ echo 'A' > A $ hg commit -Am A adding A $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg revert -ar 1 adding A $ hg commit -Am "A'" created new head $ hg log -G --template='{desc} {node}' @ A' f89bcc95eba5174b1ccc3e33a82e84c96e8338ee | | o A 9d73aac1b2ed7d53835eaeec212ed41ea47da53a |/ o base d20a80d4def38df63a4b330b7fb688f3d4cae1e3 $ hg debugobsolete 9d73aac1b2ed7d53835eaeec212ed41ea47da53a f89bcc95eba5174b1ccc3e33a82e84c96e8338ee obsoleted 1 changesets Push it. The bundle should not refer to the extinct changeset. $ hg init ../other $ hg push ../other pushing to ../other searching for changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files $ hg -R ../other verify checking changesets checking manifests crosschecking files in changesets and manifests checking files checked 2 changesets with 2 changes to 2 files Adding a changeset going extinct locally ------------------------------------------ Pull a changeset that will immediatly goes extinct (because you already have a marker to obsolete him) (test resolution of issue3788) $ hg phase --draft --force f89bcc95eba5 $ hg phase -R ../other --draft --force f89bcc95eba5 $ hg commit --amend -m "A''" $ hg --hidden --config extensions.mq= strip --no-backup f89bcc95eba5 $ hg pull ../other pulling from ../other searching for changes adding changesets adding manifests adding file changes added 1 changesets with 0 changes to 1 files (+1 heads) 1 new phase-divergent changesets new changesets f89bcc95eba5 (run 'hg heads' to see heads, 'hg merge' to merge) check that bundle is not affected $ hg bundle --hidden --rev f89bcc95eba5 --base "f89bcc95eba5^" ../f89bcc95eba5.hg 1 changesets found $ hg --hidden --config extensions.mq= strip --no-backup f89bcc95eba5 $ hg unbundle ../f89bcc95eba5.hg adding changesets adding manifests adding file changes added 1 changesets with 0 changes to 1 files (+1 heads) (1 other changesets obsolete on arrival) (run 'hg heads' to see heads) check-that bundle can contain markers: $ hg bundle --hidden --rev f89bcc95eba5 --base "f89bcc95eba5^" ../f89bcc95eba5-obs.hg --config experimental.evolution.bundle-obsmarker=1 1 changesets found $ hg debugbundle ../f89bcc95eba5.hg Stream params: {Compression: BZ} changegroup -- {nbchanges: 1, version: 02} (mandatory: True) f89bcc95eba5174b1ccc3e33a82e84c96e8338ee cache:rev-branch-cache -- {} (mandatory: False) $ hg debugbundle ../f89bcc95eba5-obs.hg Stream params: {Compression: BZ} changegroup -- {nbchanges: 1, version: 02} (mandatory: True) f89bcc95eba5174b1ccc3e33a82e84c96e8338ee cache:rev-branch-cache -- {} (mandatory: False) obsmarkers -- {} (mandatory: True) version: 1 (70 bytes) 9d73aac1b2ed7d53835eaeec212ed41ea47da53a f89bcc95eba5174b1ccc3e33a82e84c96e8338ee 0 (Thu Jan 01 00:00:00 1970 +0000) {'user': 'test'} $ cd .. pull does not fetch excessive changesets when common node is hidden (issue4982) ------------------------------------------------------------------------------- initial repo with server and client matching $ hg init pull-hidden-common $ cd pull-hidden-common $ touch foo $ hg -q commit -A -m initial $ echo 1 > foo $ hg commit -m 1 $ echo 2a > foo $ hg commit -m 2a $ cd .. $ hg clone --pull pull-hidden-common pull-hidden-common-client requesting all changes adding changesets adding manifests adding file changes added 3 changesets with 3 changes to 1 files new changesets 96ee1d7354c4:6a29ed9c68de updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved server obsoletes the old head $ cd pull-hidden-common $ hg -q up -r 1 $ echo 2b > foo $ hg -q commit -m 2b $ hg debugobsolete 6a29ed9c68defff1a139e5c6fa9696fb1a75783d bec0734cd68e84477ba7fc1d13e6cff53ab70129 obsoleted 1 changesets $ cd .. client only pulls down 1 changeset $ cd pull-hidden-common-client $ hg pull --debug pulling from $TESTTMP/pull-hidden-common query 1; heads searching for changes taking quick initial sample query 2; still undecided: 2, sample size is: 2 2 total queries in *.????s (glob) 1 changesets found list of changesets: bec0734cd68e84477ba7fc1d13e6cff53ab70129 listing keys for "bookmarks" bundle2-output-bundle: "HG20", 4 parts total bundle2-output-part: "changegroup" (params: 1 mandatory 1 advisory) streamed payload bundle2-output-part: "listkeys" (params: 1 mandatory) empty payload bundle2-output-part: "phase-heads" 24 bytes payload bundle2-output-part: "cache:rev-branch-cache" (advisory) streamed payload bundle2-input-bundle: with-transaction bundle2-input-part: "changegroup" (params: 1 mandatory 1 advisory) supported adding changesets add changeset bec0734cd68e adding manifests adding file changes adding foo revisions added 1 changesets with 1 changes to 1 files (+1 heads) bundle2-input-part: total payload size 476 bundle2-input-part: "listkeys" (params: 1 mandatory) supported bundle2-input-part: "phase-heads" supported bundle2-input-part: total payload size 24 bundle2-input-part: "cache:rev-branch-cache" (advisory) supported bundle2-input-part: total payload size 39 bundle2-input-bundle: 3 parts total checking for updated bookmarks updating the branch cache new changesets bec0734cd68e (run 'hg heads' to see heads, 'hg merge' to merge)